'''
unconfirmed_users= ['alice','brian','candace']
confirmed_users = []
while unconfirmed_users:
    current_user = unconfirmed_users.pop()
    print(f"Verifying user: {current_user.title()}")
    confirmed_users.append(current_user)
print("\nThe following users have been confirmed:")
for confirmed_user in confirmed_users:
    print(confirmed_user.title())
'''

'''
pets = ['dog','cat','dog','goldfish','cat','rabbit','cat']
print(pets)

while 'cat' in pets:
    pets.remove('cat')

print(pets)
'''

'''
responses = {}
polling_active = True
while polling_active:
    name = input("\nWhat is your name?")
    response = input("Which mountain would you like to climb someday?")
    responses[name] = response  #添加键值对格式：字典名[键名] = '值'
    repeat = input("Would you like to let another person respond?(yes/no) ")
    if repeat == 'no':
        polling_active = False
print("\n--- Poll Results ---")
print(responses)
for name, response in responses.items():
    print(f"{name} would like to climb {response}")
'''

#练习
#7-8/7-9
sandwich_orders = ['奶酪三明治','pastrami','pastrami','培根三明治','pastrami','鸡肉三明治','鱼肉三明治','pastrami']
finished_sandwiches = [] 
print("pastrami已售完")
while 'pastrami' in sandwich_orders:
    sandwich_orders.remove('pastrami')
print(sandwich_orders)
while sandwich_orders:
    sandwich = sandwich_orders.pop()
    finished_sandwiches.append(sandwich)
    print(f"{sandwich},已制作")
print(finished_sandwiches)

